Cooper Bussmann BP/KTK-15 Type KTK Fast Acting Fuse, Carded 600Vac maximum Dimensions: 1332 x 1 12  (10.3 x 38.1mm) Melamine tube, nickel-plated Brass endcaps Used in control circuits, Lighting circuit protection, and meter circuits Quantity per card: 1 KTK Fast Acting Fuse 15A, Carded Fuse Current